

*{
	padding: 0px;
	margin: 0px;
	margin:  0 auto;
}
.all{
	height: 500px;
	width: 600px;
	background: pink;
}
.all .shang_mid{
	height: 450px;
	width: 500px;
	background: blue;
	display: block;
	margin: 0 auto;
}
.all .all_shang{
	height: 30px;
	width: 175px;
	background: red;
}
.all .all_xia{
	height: 110px;
	width: 175px;

}
